Java Programming :: Declarations and Access Control
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What will be the output of the program?
class A { final public int GetResult(int a, int b) { return 0; } } class B extends A { public int GetResult(int a, int b) {return 1; } } public class Test { public static void main(String args[]) { B b = new B(); System.out.println("x = " + b.GetResult(0, 1)); } } -
You want subclasses in any package to have access to members of a superclass. Which is the most restrictive access that accomplishes this objective?
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public class Outer{public void someOuterMethod() { //Line 5}public class Inner { }public static void main(String[] argv){Outer ot = new Outer(); //Line 10}}Which of the following code fragments inserted, will allow to compile?
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which two code fragments will compile?interface Base { boolean m1 (); byte m2(short s); }- interface Base2 implements Base {}
- abstract class Class2 extends Base
{ public boolean m1(){ return true; }} - abstract class Class2 implements Base {}
- abstract class Class2 implements Base
{ public boolean m1(){ return (7 > 4); }} - abstract class Class2 implements Base
{ protected boolean m1(){ return (5 > 7) }}
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Which three form part of correct array declarations?
- public int a [ ]
- static int [ ] a
- public [ ] int a
- private int a [3]
- private int [3] a [ ]
- public final int [ ] a
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What is the prototype of the default constructor?public class Test { } -
What is the most restrictive access modifier that will allow members of one class to have access to members of another class in the same package?
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Which of the following is/are legal method declarations?
- protected abstract void m1();
- static final void m1(){}
- synchronized public final void m1() {}
- private native void m1();
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Which cause a compiler error?
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Which three are valid method signatures in an interface?
- private int getArea();
- public float getVol(float x);
- public void main(String [] args);
- public static void main(String [] args);
- boolean setFlag(Boolean [] test);
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